Oil burner and similar fuel-consuming means and system therefor



S. C. GULICK April 14, 1931.

OIL BURNER AND SIMILAR FUEL CONSUMING MEANS AND SYSTEM THEREFOR Filed March lO, 1928 Snom/woz Y Patented Apr. 14, 1931 FA'IENT @FFEQE SEELEY C. GULICK, OF CHAMPAIG-N, ILLINOIS OIL BURNER AND SIMILAR FUEL-CONSULTING MEANS AND SYSTEM THEREFOR Application filed March 10, 1928. Serial No. 260,762.

Thisv invention relates to oil burners and similar fuel consuming means and isparticularly adaptedfor use with the system described in my copending application filed .'s July 12th, 1928, Serial No. 292,310, which application is a division of the present application as originallyled.

An important object of the invention is to provide a novel type of fuel oil burner whereinthe oil and primary air are supplied under pressure in a novel manner to be perfectly burned at the nozzle.

A further object is to provide a novel burner including va body having a burner nozzle at one end thereof, and to provide novel means for supplying fuel and primary air to said body for combustion at the nozzle thereof.

A further object is to provide a device of Se the above mentioned character wherein two sources of primary air are provided from the nozzle, one source of air being adapted to mix air with the fuel prior to its ejection through the nozzle, while the other source of primary air is adapted to supply air under pressure to the air and fuel previously mixed, at its point of ejection through the nozzle. l l

Other objects and advantages of the invent-ion will become apparent during the course of the following description.

Inthe drawings I have shown one embodiment of the invention. In this showing,

Figure 1 is a plan view of the burner and associated elements, parts being shown in section,

Figure 2 is a rea-r elevation parts being broken away,

Figure 3 is a detail section on line 3-3 of Figure 1.

Referring to the drawings, the numeral 10 designates a burner as a whole including a substantially cylindrical body 11 having lateral projections 12 and 13 on opposite sides thereof for a purpose to be described, A

of the same,

rsimilar projection 14 is carried by the lower side of the burner body as shown in Figure 2.

rEhe body of the burner is provided with parallel passages 15 and 16 communicating respectively with ports 17 and 18 formed in the projections 12 and 13. Pipes 19 and 20, connected respectively to sources of fuel oil and air supply, communicate with the ports 17 and 18, as clearly shown in Figure 1. Similarly, an air pipe 21 is connected to the projection let to supply air to a passage 22 arranged in the body of the burner, substantially axially thereof.

Valve stems 23 and 24 are arranged respectively in the passages 15 and 16 and each is provided with an enlarged threaded portion 25 received in threaded openings 26 formed in the outer portion of the body. Beyond the threaded portions, the valve stems extend through packing members 27 maintained in position by sleeves 28. These sleeves are arranged adjacent each other, as will be obvious, and are adapted to be secured in position by engagement with the head of a vscrew 29, as shown in Figure 1. The sleeves 28 and their associated packing members are preferably slidable in the body of the burner and. are readily removable by removing the screw 29 and rotating the valve stems to withdraw the latter. stem is provided with a preferably knurled head 30. l

rlhe burner proper comprises inner and outer axial nozzle members 31 and 32 having substantially hemispherical inner ends, as shown in Figure 1. The inner nozzle member has its outer face seated against the inner end of the burner body while the outer nozzle member is threaded on the body and on the inner end of the inner nozzle member. The two nozzle members are spaced from each other to provide an annular space 33 and each is provided with a nozzle opening 34. The inner nozzle member is provided with a pair of'passages 35 and 36 communicating Each valve 7 respectively with the passages and 16. The

outer ends of these passages deliver oil .and air to .a pocket 37 formed in the inner end portionofthe inner nozzle and communicating with the inner nozzle opening 34. The

inner nozzle member' r*also isprovided with a passage'38V communicating with the axial ,passage 22'of the burner. body, and the outer end of the passageY 38 communicates with a transverse passage 39 (see Figure 3) to def liver air tothe annular space 33.

f The yinner ends of! the Vvalve stems 23 and 24 are provided respectively with valves 40 and 41 to control communication between the passages 15 and 16, and th'epassage's 35, and 36. Means to be described is provided for controlling the passage ofair into thean- "nular space through the passages 22, 38`

and Y 39.l

, burner nozzle.y 4

,A combined supply and supporting memh ber 42 is arranged outwardly of the burner' and is preferably` formed as a single casting. lThe member V42isprovided at opposite ends with .alined portions 43 and 44 respectively provided with axial passages 45 and 46. ylhe l member 42 is further provided .with an off-V set portion 47 for apurpose to be described. The passages 45and 46 are pro-vided with lateral extensions 43 and '49 respectively communicating with the pipes 2O and 19, these Vpipes obviously being secured to the member 42 and forming therewith substantially .a unit construction; V Y 1 Adjacent its inner end the interior of the portion 43 'of the member 42 is provided with a wall 50 havingan opening therethrough.

This opening .is provided with a valve seat.y 51 adapted to be engaged bya valvev 52 carried by a ste1n53.4 This stem is threaded ina plug 54 which, in turn, is'threaded in the inner end of the portion 43 of the support, and-the free end ofthe stem 53 is provided with a preferably knurled operating. knob 55. It will be obvious thatspace for the knob' 55 and associated elements is provided by offsetting the intermediate portion 47 of themember 42. The space between the wall 50 and plugVV 54 forms a chamber 56 adapted toreceive .air from. the passage 45 when'the valve 52 is'jopen, and the chamber 56 ccm-V municates V'with a passage 57 as vshown in Figure 1. The pipe l21 is connected tothe supporting 4 vmember I 42 and communicates with thepassage 57.l frThevalve 52iobviously constitutes the means ffor controlling vfthe passage of'airinto the `pipe21, and conse- O [uentlyv `to the .annular passage 33 in, the

. .The outer ends ofthe supporting member 42 are groundl to provide conicalseats 58 adaptedto, be engaged by" lcorresponding conical projections 59 carried by supports 60.

f These vsupports .are provided'with passages 61 and 6 2 communicating respectively with the passages45 'and '46.' 'j The outer ends 'Ofi the passages 6,1 .and 62 turn downwardly as at 63 for communication with air and oil supply pipes respectively, the supply pipes being secured to the supports to fix the latter in position. Each of the supports is provided withan ear 66 havingopenings for the reception ofa tie rod 67. his rodis provided at oneend with a head 68 engaging the outer face of one of the ears 66, and at its outer end with a nut 69 by means'of which' the supports may be drawn toward each other.

It will befapparent that tightening of the nut 69 causes the conical faces of the supports to tightly engage theconical seats 58 to provide leak-proof joints ,and to support the b urner and associated elements in position. By looseningthe nut 69, the supports 60 can be sprung apart to permit'the burner and associated-partsito be removed as a unit.

The operation of the burner willbe clear A from an` examination of the figures. V'Gil and air under pressure from sources not shown f will be supplied to the members 60 through the ysupply pipes. Preferably the oil and air is supplied by Vrneansvof the apparatus described in my'aforementioned copending ap-` plication. @il flows into the passage46 of the member 42, to be supplied to the burner through pipe '19. Similarly, air will -b'e supplied tothe passage 45, Vand thenceto the burner through pipes 20 andv 21. From theV pipe 19, theoil iows .I through port 17 into passage-15, and thence through passagey 35 winto.chamber37. Similarly air flowsfrom thepipe 2O through port .'18, thence through passages16 and 36 tothechamber 37. The oil andr air escape orifices leading intovthe chamber 37 are relatively small, and since the Vvair and oil are'supplied under pressure, an

eiiicientmixing action will takeplace when they arebroughttogether in the chamber 37. In this connection it will be noted'that the outlet end` ofv the passage 36, 'leading into Vthe chamber 37, is arranged substantially ingly air-,will be delivered at a high velocity to the outer orifice 34 tobe discharged there-V from. yThis air mingles with thel air and fuel mixture from the chamber 37 which is inan atomizedlcondition, and assists indis- -chargingit fromr the nozzle at high velocity to completely vaporize the fuel.y mixture.V

Thus a highly eflicient mixture is provided which burns cleanly and completely and furnishes the highest possible number of heat units per unit of fuel. The rate of iiow of air and fuel, and the proportions thereof readily may be varied by operation of the valve nuts 30 and 55. The former provides for variations in the mixture in the chamber 37 while the latter varies the proportionate amount of air admitted into the annular chamber 33.

It will be apparent that the burner, the pipes 19, 20 and 21, and the member l2 are connected together to form in effect a single burner unit, and the supporting means for this unit permits its ready removal and replacement. In the event of the failure of the burner to operate for any reason, thus necessitating repairs to the burner, a duplicate burner unit readily may be installed to prevent the necessity of stopping the operation of the apparatus until the repairs have been made. By removing the rod 67, the supports may be sprung apart sufiiciently at their upper ends to release the conical engaging faces 58 and 59, whereupon the burner unit may be removed and a duplicate unit placed in position for continued operation of the apparatus. After the duplicate unit has been placed in position, the rod 67 is tightened in position, and the device is ready for operation. rlhe conical engaging faces referred to are ground to provide leakproof joints, as will be apparent.

It is to be understood that the form of the invention herewith shown and described is to be taken as a preferred example of the same and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claim.

IV claimf- An oil burner comprising a body formed of two sections secured together, a third section arranged inwardly of and secured to one of said firstmentioned sections, a p0rtion of said third section being spaced from its securing section to provide an air cham ber therebetween, said chamber being pro vided with a'discharge opening, said third section being arranged in abutting relation with the other of said first mentioned sections and having a mixing chamber therein, the latter chamber being provided with a discharge opening in alinement with said iirst mentioned opening, said third member being provided with a fuel passage and an air passage communicating with said mixing chamber, a pair of lateral extensions carried by the last named of said first mentioned sections, each extension being provided with a port communicating with one of said passages, a fuel pipe communicating with one port, an air pipe communicating with the other port, said last mentioned secln testimony whereof I aiiix my signature.

SEELEY C. GULICK. 

